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package filtros;

import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.List;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import negocio.Usuario;

/**
 *
 * @author user
 */
public class FiltroLogin implements Filter {

    private static final boolean debug = true;

    // The filter configuration object we are associated with.  If
    // this value is null, this filter instance is not currently
    // configured. 
    private FilterConfig filterConfig = null;

    public FiltroLogin() {
    } 

    private void doBeforeProcessing(ServletRequest request, ServletResponse response)
	throws IOException, ServletException {
	if (debug) log("FiltroLogin:DoBeforeProcessing");

	// Write code here to process the request and/or response before
	// the rest of the filter chain is invoked.

	// For example, a logging filter might log items on the request object,
	// such as the parameters.
	/*
	for (Enumeration en = request.getParameterNames(); en.hasMoreElements(); ) {
	    String name = (String)en.nextElement();
	    String values[] = request.getParameterValues(name);
	    int n = values.length;
	    StringBuffer buf = new StringBuffer();
	    buf.append(name);
	    buf.append("=");
	    for(int i=0; i < n; i++) {
	        buf.append(values[i]);
	        if (i < n-1)
	            buf.append(",");
	    }
	    log(buf.toString());
	}
	*/
    } 

    private void doAfterProcessing(ServletRequest request, ServletResponse response)
	throws IOException, ServletException {
	if (debug) log("FiltroLogin:DoAfterProcessing");

	// Write code here to process the request and/or response after
	// the rest of the filter chain is invoked.
	
	// For example, a logging filter might log the attributes on the
	// request object after the request has been processed. 
	/*
	for (Enumeration en = request.getAttributeNames(); en.hasMoreElements(); ) {
	    String name = (String)en.nextElement();
	    Object value = request.getAttribute(name);
	    log("attribute: " + name + "=" + value.toString());

	}
	*/

	// For example, a filter might append something to the response.
	/*
	PrintWriter respOut = new PrintWriter(response.getWriter());
	respOut.println("<P><B>This has been appended by an intrusive filter.</B>");
	*/
    }

    /**
     *
     * @param request The servlet request we are processing
     * @param response The servlet response we are creating
     * @param chain The filter chain we are processing
     *
     * @exception IOException if an input/output error occurs
     * @exception ServletException if a servlet error occurs
     */
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain)
	throws IOException, ServletException {

	if (debug) log("FiltroLogin:doFilter()");

	doBeforeProcessing(request, response);
	
	Throwable problem = null;
	doBeforeProcessing(request, response);


	String user = request.getParameter("txtUser");
        String pass = request.getParameter("txtPass");
        String opcion = request.getParameter("opcion");
        System.out.println(opcion);
        //Usuario integrante= new Usuario();
        //DESEncryption e=new DESEncryption();
        //ManejadorBaseDato bd=new ManejadorBaseDato();
        //String url = e.devolverURL(filterConfig.getInitParameter("url"));
        //String usr = e.devolverURL(filterConfig.getInitParameter("usr"));
        //String pas = e.devolverURL(filterConfig.getInitParameter("pas"));
        //System.out.println("dentro de filtro:"+url+" "+usr+" "+pas);

        //integrante.setUser_int(user);
        //integrante.setPassword_int(pass);
        //String rol=integrante.obtenerRol(url,usr,pas);

       if(opcion.equalsIgnoreCase("login")){
           int ban=0;
            Usuario usu = new Usuario(),usu1= new Usuario();
            List<Usuario> u = Usuario.consultar();




            try{
                for(int i=0;i<u.size();i++){
                    usu = (Usuario)u.get(i);
                    if(usu.getUser().equals(user)&& usu.getPassword().equals(pass)){
                        /*usu1.setUser(user);
                        usu1.setRol(usu.getRol());*/
                        usu1=usu;
                        ban=1;
                     }
                }
                if(ban==1){
                   HttpSession s = ((HttpServletRequest)request).getSession();
                    if(usu1.getRol().equalsIgnoreCase("owner")){
                         //request.setAttribute("comando1",comando);
                        //s.setAttribute("rol","ADMINISTRADOR");
                        //request.setAttribute("rol","owner");
                        s.setAttribute("usuario", usu1);
                        System.out.println(usu1.getNombre());
                    }
                    else if(usu1.getRol().equalsIgnoreCase("member")){
                         //request.setAttribute("comando1",comando);
                        //request.setAttribute("rol","member");
                        s.setAttribute("usuario", usu1);
                        System.out.println(usu1.getNombre());
                    }


                    chain.doFilter(request, response);
                } else {
                    request.setAttribute("error","Error");
                    RequestDispatcher rd = request.getRequestDispatcher("/login.jsp");
                    rd.forward(request, response);
                    //out.println("Error usuario no esta registrado!!!");
                }
            }
            catch(Exception ex)
            {
                System.out.println("prueba entro a la exception");
            }
        }

        try{
            chain.doFilter(request, response);
        }catch(Exception ex)
	{
            System.out.println("prueba entro a la exception");
	}

	doAfterProcessing(request, response);

	// If there was a problem, we want to rethrow it if it is
	// a known type, otherwise log it.
	if (problem != null) {
	    if (problem instanceof ServletException) throw (ServletException)problem;
	    if (problem instanceof IOException) throw (IOException)problem;
	    sendProcessingError(problem, response);
	}
    }
    
    /**
     * Return the filter configuration object for this filter.
     */
    public FilterConfig getFilterConfig() {
	return (this.filterConfig);
    }

    /**
     * Set the filter configuration object for this filter.
     *
     * @param filterConfig The filter configuration object
     */
    public void setFilterConfig(FilterConfig filterConfig) {
	this.filterConfig = filterConfig;
    }

    /**
     * Destroy method for this filter 
     */
    public void destroy() { 
    }

    /**
     * Init method for this filter 
     */
    public void init(FilterConfig filterConfig) { 
	this.filterConfig = filterConfig;
	if (filterConfig != null) {
	    if (debug) { 
		log("FiltroLogin:Initializing filter");
	    }
	}
    }

    /**
     * Return a String representation of this object.
     */
    @Override
    public String toString() {
	if (filterConfig == null) return ("FiltroLogin()");
	StringBuffer sb = new StringBuffer("FiltroLogin(");
	sb.append(filterConfig);
	sb.append(")");
	return (sb.toString());
    }

    private void sendProcessingError(Throwable t, ServletResponse response) {
	String stackTrace = getStackTrace(t); 

	if(stackTrace != null && !stackTrace.equals("")) {
	    try {
		response.setContentType("text/html");
		PrintStream ps = new PrintStream(response.getOutputStream());
		PrintWriter pw = new PrintWriter(ps); 
		pw.print("<html>\n<head>\n<title>Error</title>\n</head>\n<body>\n"); //NOI18N
		    
		// PENDING! Localize this for next official release
		pw.print("<h1>The resource did not process correctly</h1>\n<pre>\n"); 
		pw.print(stackTrace); 
		pw.print("</pre></body>\n</html>"); //NOI18N
		pw.close();
		ps.close();
		response.getOutputStream().close();
	    }
	    catch(Exception ex) {}
	}
	else {
	    try {
		PrintStream ps = new PrintStream(response.getOutputStream());
		t.printStackTrace(ps);
		ps.close();
		response.getOutputStream().close();
	    }
	    catch(Exception ex) {}
	}
    }

    public static String getStackTrace(Throwable t) {
	String stackTrace = null;
	try {
	    StringWriter sw = new StringWriter();
	    PrintWriter pw = new PrintWriter(sw);
	    t.printStackTrace(pw);
	    pw.close();
	    sw.close();
	    stackTrace = sw.getBuffer().toString();
	}
	catch(Exception ex) {}
	return stackTrace;
    }

    public void log(String msg) {
	filterConfig.getServletContext().log(msg); 
    }

}
